Tesis sobre el tema "Tracce passive"
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Vystavna, Yuliya. "Environmental and socio-economic determinants, their impacts on trace metals and pharmaceuticals in watercourses : a comparison on two watersheds of France and Ukraine". Thesis, Bordeaux 1, 2012. http://www.theses.fr/2012BOR14486/document.
Texto completoThe PhD study focuses on the understanding of processes of the impact of environmental and socio-economic determinants on the occurrence, accumulation and distribution of trace metals and pharmaceuticals in urban watercourses. The research has been based on the analysis of the origin; physico-chemical properties and behavior of trace pollutants. The study was performed in two general steps: (i) monitoring of trace metals and pharmaceuticals in natural waters; (ii) description and analysis of environmental and socio-economic determinants that influence the water chemistry and (iii) evaluation of trace pollutants as environmental and socio-economic indicators. The monitoring of trace metals in natural water was proceed using the combination of passive and grab water sampling techniques, in order to evaluate various forms of elements, sources, seasonal and spatial variations, accumulation and environmental risks associated with the presence of contaminants in the study areas. The monitoring of pharmaceuticals was done using passive sensors to determine their capacity to register chemicals variation in time and adequation to use environmental data for the regional medicament consumption modeling. Monitoring data were also investigated in term of potential applications of trace metals and pharmaceuticals as environmental and socio-economic indicators. Two study sites were chosen: (1) the Kharkiv region in Ukraine where research was focused on the Lopan and Udy rivers of the Seversky Donets water basin and (2) the Bordeaux region in France where water monitoring was done in the Jalle River, Garonne water basin. Sites were mainly selected to represent the water pollution status in different socio-economic regions. General PhD results can be described as follows:1. The methodology for pilot and continuous monitoring of trace elements in the water with combination of traditional (grab) and innovative (passive) sampling procedures help to get data on trace elements presence, accumulation and sources, considering time variations.2. The analysis of trace metals and pharmaceuticals in two river basins of France and Ukraine and determination of environmental factors that impact on the occurrence, accumulation and distribution of these chemicals.3. The establishment of links between regional socio-economic issues and water quality data. The socio-economic and environmental modeling helps us to understand the water pollution process in regional context and give the opportunity to propose contaminants as tracers of anthropogenic activities and water quality assessment.Results of the PhD study are presented in the form of published or submitted peer-reviewed articles
Диссертация «Экологические и социально-экономические факторы распространения металлов и фармацевтических веществ в природных водах: на примере рек Харькова, Украина и Бордо, Франция» на соискание степени Доктора Философии (Environmental Science) подготовлена в рамках договора о научном сотрудничестве и совместном руководстве между Университетом Бордо, Франция и Харьковской национальной академией городского хозяйства, Украина.Актуальность работы связана с сушествующими проблемами мониторинга природных вод, недостатком исследований микро-загрязнителей водотоков как во Франции, так и в Украине, существующим экологическим риском, который возникает при поступлении и накоплении металов и фармацевтических веществ в урбанизированных водотоках, а также возможностью использования химических веществ в качестве экологических и социально – экономических индикаторов. Целью диссертационной работы стало усовершенствование методов мониторинга микро-загрязнителей в природных водах и оценка возможности использования отдельных микро-загрязнителей в качестве экологических и социально-экономических показателей. Предметом исследования являются экологические и социально-экономические факторы, влияющие на распространение металлов и фармацевтических веществ в природных водах. Объектом исследования стали реки Уды и Лопань, Харьковская область, Украина и река Жаль, регион Бордо, Франция.Основные задачи: (1) провести мониторинг рек на различные формы металлов и фармацевтические вещества с применением стандартных и инновационных (пассивных) методов отбора проб; (2) опеределить экологические и социально- экономические факторы, которые влияют на распространение микрозагрязнителей в природных водах; (3) изучить возможность использования металлов и фармацевтических веществ в качестве индикаторов антропогенного загрязнения природных вод.В результате проведенных исследований был: Впервые: (а) осуществлен мониторинг лабильных форм металлов в реках бассейна Северского Донца, в результате которого определены концентрации токсичных металлов в водотоках, источники и количество их поступления; (б) проведен мониторинг фармацевтических веществ в природных водах Украины, (в) определены концентрации и основные источники поступления фармацевтических препаратов и удельные показатели потребления различных медикаментов в Харьковском регионе; Усовершенствованы: (а) методика проведения мониторинга воды за счет применения стандартных и инновационных пассивных методов отбора проб воды в контрастных климатических и гидрологических условиях с целью исследования различных форм загрязнителей и их временных вариаций; (б) балансово-статистическая модель, которая позволяет использовать данные мониторинга природных вод для социально-экономической характеристики регионов – водопользователей; Предложены:(а) система определения геохимического фона рек на основании торий – нормализованных концентраций металлов в донных отложениях; (б) метод использование металлов и фармацевтических веществ в качестве индикаторов поступления сточных вод для идентификации несанкционированных сбросов.Основу диссертационного исследования составили натурные данные полевых исследований рек Харькова и Бордо, которые были организованы и проведены с непосредственным участием автора в 2008 – 2011 гг. Большинство лабораторных анализов было лично проведено автором в сертифицированных лабораториях Университета Бордо и Университета Орлеан, Франция.Диссертация имеет теоретическое и практическое значение для дальнейшего развития мониторинга природных вод, а также повышения уровня экологической и социальной безопасности в регионах. По теме опубликовано 4 статьи в международных журналах с высоким ИМПАКТ фактором, а также 5 статей в изданиях, реглиментированных ВАК Украины и России
Toumi, Khalifa. "A trust framework for multi-organization environments". Phd thesis, Institut National des Télécommunications, 2014. http://tel.archives-ouvertes.fr/tel-00997693.
Texto completoPoulier, Gaelle. "Etude de l’échantillonnage intégratif passif pour l’évaluation réglementaire de la qualité des milieux aquatiques : application à la contamination en pesticides et en éléments trace métalliques des bassins versants du Trec et de l’Auvézère". Thesis, Limoges, 2014. http://www.theses.fr/2014LIMO0032/document.
Texto completoThe intensive use of pesticides in agriculture and urban activities since the 1950s has led to diffuse contamination of environmental compartments (air, soil, water). The presence of these molecules can lead to toxic effects for biota. The implementation of the Water Framework Directive (WFD) requires the use of an efficient monitoring network, based on reliable sampling and analytical techniques. Nowadays, grab sampling followed by extraction of analytes and chromatographic analysis is the most widespread strategy because of its simplicity of implementation but it also has numerous drawbacks. The crux of the issue lies in the lack of temporal representativeness and the low analytical sensibility. An alternative strategy to overcome some of these problems could be the use of passive samplers. This contribution aims at discuss about the possible application of passive samplers in regulatory monitoring programs. The originality of this work lies in :The variety of tested devices: three different samplers was studied (The Polar Organic Chemical Integrative Sampler (POCIS), the Chemcatcher and the Diffusive Gradient in Thin Film (DGT). Conventional grab sampling strategies were also evaluated.The variety of studied environments: two very different watersheds were selected. The first one presented a high level of contamination; the second had a low contamination in pesticides.The implementation of passive samplers in a real regulatory context, as the selected streams were monitored by the Water Agency for operational control. Data from the Water Agency could therefore be compared with passive sampler data
Devillers, Delphine. "Fiabilisation de la quantification des éléments traces cationiques et anioniques par la technique d'échantillonnage DGT en milieu aquatique naturel". Thesis, Limoges, 2017. http://www.theses.fr/2017LIMO0058/document.
Texto completoThe passive sampling DGT technique (Diffusive Gradients in Thin Films) has a lot of benefits (time-weighted average concentrations, low limits of quantification) and would therefore be a useful tool for monitoring studies to quantify trace elements in natural water. However, there are still some limitations and grey areas that put the brakes on the development of the method for regulatory applications. The aim of this work is to identify potential biases and contribute to increase the method reliability. This study shows that a minimized uncertainty on results can be obtained only if elution factors are experimentally determined; however, standard values of 0.8 for Cr(III) and 0.85 for Al(III), Cd(II), Co(II), Cu(II), Ni(II), Pb(II) and Zn(II) are suggested to reduce manipulations while keeping reasonable uncertainty (<10%). Studying the influence of fouling developed on DGT devices showed that the sorption of cations Cd(II), Cu(II) and Pb(II) had, respectively, a slight, moderate and strong impact on their accumulation in DGT samplers and therefore on their quantification. Samplers should then be deployed for less than one week. In contrast, fouling had a negligible impact on oxyanions As(V), Cr(VI), Sb(V) and Se(VI). Finally, a method was developed to simultaneously quantify both Cr oxidation states naturally occurring in natural waters, which are Cr(III), essential to life, and Cr(VI), toxic. Both forms are accumulated in a single DGT sampler before being selectively separated during an elution step. This method is robust for wide ranges of ionic strengths and sulfate concentrations but for a narrower range of pH (4 to 6)
Mouttappa, Pramila. "A symbolic-based passive testing approach to detect vulnerabilities in networking systems". Phd thesis, Institut National des Télécommunications, 2013. http://tel.archives-ouvertes.fr/tel-01017860.
Texto completoVeyret, Nathalie. "Traces d'un passage : l'oeuvre de Barbara Pym". Bordeaux 3, 1996. http://www.theses.fr/1996BOR30036.
Texto completoThis study of the works of barbara pym includes for the first time in france the analysis of the author's personal papers deposited at the bodleian library : manuscripts of the novels, her diary, letters, notebooks and conference scripts. The wealth of this material is the starting point for a new study of the novels. The works are the traces of the author's passage in post-var england. Pym's characters are rather dull and lead a quiet unobtrusive life. Pym's world is the world of failure, in which men and women play games but never achieve communication. Love affairs are so dangerous that they are avoided. Solitude sometimes is best company, especially when relieved by the prosaic, mundane pleasures of food for instance. The characters invent a life of their own, in which humdrum tasks play a prominent role. Pym's writing also uses banality to emphasise the tragedy of human life. Simple words bide a profound meaning. Pym achieves this book about nothing flaubert wished for
Sundermeyer, Miles Aaron. "Mixing in the North Atlantic tracer release experiment : observations and numerical simulations of Lagrangian particles and passive tracer". Thesis, Massachusetts Institute of Technology, 1995. http://hdl.handle.net/1721.1/57846.
Texto completoIncludes bibliographical references (leaves 89-90).
by Miles Aaron Sundermeyer.
M.S.
Matheu, Nathalie. "Passage à l’écriture, écriture du passage : sur les traces d’adultes migrants en ateliers d’écriture". Thesis, Montpellier 3, 2018. http://www.theses.fr/2018MON30089.
Texto completoFor the last twenty years, writing pedagogy has been enriched in reflection and practice by research, most notably, from linguistics and genetic criticism (Fabre, 1990; Doquet, 2011; Chiss, 2012). These studies, which consider writing within its scriptural dynamic, have examined the construction of the act of writing (Fénoglio & Chanquoy, 2007). In light of the contributions of J. Derrida (1967) and J. Goody (1977/1979), who dismissed the hegemony of logocentric thought, writing can effectively no longer be reduced to a secondary code, a dual representation of thought and the language that gives voice to it. With its specific functions, writing is intertwined with memory, both through anamnesic activation and the informed use of hypomnesic artifacts (writing instruments and media). The double memory game (anamnesis and hypomnesis), which contributes to the process of writing, enables the transition to the written mode by orchestrating a chain that, in a symbolic way, links voice and writing and thus opens inscriptional spaces for the writing subject. This epistemological refection supported the development of experimental instructional sessions, which took the form of writing workshops, designed to support migrant adults’ transition to writing. The workshops were implemented as part of a broader introduction to the language arts (Meschonnic, 1982; Auger & Pierra, 2006; Aden, 2008) in contexts of teaching and learning French as a second language (FSL). This arrangement allowed for the construction of a corpus of 74 textual manuscripts, collected by means of participant observation in the context of volunteer work. The qualitative analysis of data, examined through the application of theory and methods from discourse analysis and textual genetics, was organized around a three-pronged approach to the notions of transition and writing. The examination of graphic marks makes it possible to uncover (1) the initial strategies of FLS writers, (2) their reconsideration of previously written text, notably by means of deletions, which reveal inner dialogism (Bres, 1988) inherent to the production of writing, and (3) the emergence of memories that reconstruct the migrant experience, and which constitute writing in transition
Seo, Daniele. "Avaliação dos teores de Br, Cl, K, Mg, Mn e V em mexilhões Perna perna (Linnaeus, 1758: Mollusca, Bivalvia) coletados no litoral do estado de São Paulo, Brasil". Universidade de São Paulo, 2012. http://www.teses.usp.br/teses/disponiveis/85/85131/tde-08032013-161647/.
Texto completoThe coastal environment has been heavily altered by multiple environmental impacts of human activities, such as disposal of sewage from urban areas, the release of numerous chemical industries, agriculture and the flow of vessels, which can lead to accidental spills of oil and oil products, fuels and other products transported by sea. In this context, a means of determining concentrations of these potentially toxic substances in the sea water is the biomonitoring by means of different types of bivalves, which have been used by various researchers, in Brazil and other countries. With regard to bivalve mollusks, particularly mussels, their use in monitoring the marine contamination is mainly due to their wide geographic distribution, sessile habit and ability to concentrate toxic metals to 102-105 times in relation to the concentrations detected in water. In the present study, we employed the passive biomonitoring using the Perna perna bivalve mollusk with respect to the elements Br, Cl, K, Mg, Mn and V. These elements were chosen since they can be determined by INAA method (Instrumental Neutron Activation Analysis), by means of short irradiation which provides faster analyzes and also due to their importance from the standpoint of environmental or nutritional studies. The aim of this study was to evaluate the content of Br, Cl, K, Mg, Mn and V in samples of Perna perna mussels (Linnaeus, 1758: Mollusca, Bivalvia) collected in coastal regions of São Paulo subject to anthropogenic contamination (Ponta de Itaipu and Palmas Island, in Santos), comparing the values obtained in sites potentially impacted with the values of the control site in Praia da Cocanha, in Caraguatatuba. The collection points located in São Paulo coast are located in the geographical areas 23º 37\'S - 45° 24\' W (Caraguatatuba) and 23º 57\'S - 46º 20\' W (Santos). The collection of organisms was performed in all seasons of the year, beginning in spring 2008 and ending in winter 2009. The samples were cleaned, crushed, homogenized and dried by lyophilization for further analysis by INAA. The INAA procedure consisted of irradiating aliquots of the samples obtained in powder form in polyethylene envelopes in the nuclear research reactor IEA - R1 of IPEN / CNEN - SP together with synthetic standards of elements. The irradiation time in the reactor was 8 to 10 s under the thermal neutron flux of 6.6 x 1012 n cm-2 s-1. The concentrations of the elements were calculated using the comparative method. The INAA procedure was validated with respect to accuracy and precision, through the analysis of certified reference materials NIST SRM 1566b Oyster Tissue and NIST SRM 2876 Mussel Tissue. The results of these certified reference materials indicated good quality of results with respect to precision and accuracy. The ranges of concentrations (dry basis weight) of the elements obtained in mussels collected in Santos and Praia da Cocanha for the four seasons of the year were: 173.80 to 358.99 mg kg-1 for Br; 45658 ± 1811 to 109166 ± 824 mg kg-1 for Cl; 7043 ± 856 to 12506 ± 675 mg kg-1 for K; 2774 ± 211 to 5691 ± 717 mg kg-1 for Mg; 7.01 ± 0.30 to 29.74 ± 3.32 mg kg-1 for Mn and 0.77 ± 0.02 to 3.43 ± 0.28 mg kg-1 for V. The seasonal and spatial variations of the concentrations of these elements were studied and the values compared to the literature. From the results obtained it can be concluded that the species of Perna perna mussels, can be used as biomonitors of marine contamination.
Bohlin, Pernilla. "Passive sampling of PAHs and some trace organic compounds in occupational and residential air : needs, evaluation and limits /". Göteborg : Institute of Medicine at Sahlgrenska Academy, University of Gothenburg, 2010. http://hdl.handle.net/2077/2.
Texto completoQuirino, Valquiria Ferraz. "Evaluating the Potential for Estimating Age of Even-aged Loblolly Pine Stands Using Active and Passive Remote Sensing Data". Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/71309.
Texto completoPh. D.
Villanueva, Jessica Denila. "Suivi par capteurs passifs des polluants émergents dans les eaux de surface en contexte urbain". Thesis, Bordeaux 1, 2013. http://www.theses.fr/2013BOR14186/document.
Texto completoThe study aimed to assess the water quality of the surface water in differingclimate conditions and management practices. Three interesting sites were chosen, (1)Jalle River and (2) Bordeaux Lac both in France and the (3) Pasig River in thePhilippines. The French sites have rainfall and run-off collectors that directly dischargewater to the water bodies. Pasig River, on the other hand, becomes a waste collector aswaste management and treatment plant are lacking. Trace metals and organics(pesticides, herbicides, pharmaceuticals and drugs) were measured. Conventional andpassive sampling approches were employed. The mass fluxes were obtained in order tocalculate the pollution transport. Physico-chemical properties and the particlecharacteristics, integrating statistical analyses, facilitated in explaining the behavior of themeasured molecules and describing the hydrological system in relation to climatevariability
Gower, Daniel W. Jr. "Speech intelligibility in tracked vehicles and pink noise under active noise reduction and passive attenuation communications headsets". Diss., Virginia Tech, 1992. http://hdl.handle.net/10919/38410.
Texto completoPh. D.
Gower, Daniel W. "Speech intelligibility in tracked vehicle and pink noise under active noise reduction and passive attenuation communications headsets /". This resource online, 1992. http://scholar.lib.vt.edu/theses/available/etd-06062008-170444/.
Texto completoHankin, Barry Gwyn. "Modelling the dispersion of a passive tracer in complex open channel flows using random walk, particle tracking techniques". Thesis, Lancaster University, 1995. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.296886.
Texto completoWatkins, Eric Andrew. "Development of Potential Remote Coal Mine Fire Response Measures: Use of Multiple Passive Source Tracers and Simulation of High Expansion Foam Flow in Simulated Gob Material". Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/83788.
Texto completoMaster of Science
Flynn, Ross Christopher. "Persistence of diatoms as trace evidence in clothing fabrics: The effects of active removal (machine washing) and passive removal (time and environment)". Thesis, Flynn, Ross Christopher (2021) Persistence of diatoms as trace evidence in clothing fabrics: The effects of active removal (machine washing) and passive removal (time and environment). Masters by Research thesis, Murdoch University, 2021. https://researchrepository.murdoch.edu.au/id/eprint/63158/.
Texto completoJong, Edmund Chime. "Development and Evaluation of a Permeation Plug Release Vessel (PPRV) for the Release of Perfluoromethylcyclohexane (PMCH) in Underground Mine Tracer Gas Studies". Diss., Virginia Tech, 2014. http://hdl.handle.net/10919/24912.
Texto completoPh. D.
Kumar, Ratnesh. "Segmentation vidéo et suivi d'objets multiples". Thesis, Nice, 2014. http://www.theses.fr/2014NICE4135/document.
Texto completoIn this thesis we propose novel algorithms for video analysis. The first contribution of this thesis is in the domain of video segmentation wherein the objective is to obtain a dense and coherent spatio-temporal segmentation. We propose joining both spatial and temporal aspects of a video into a single notion Fiber. A fiber is a set of trajectories which are spatially connected by a mesh. Fibers are built by jointly assessing spatial and temporal aspects of the video. Compared to the state-of-the-art, a fiber based video segmentation presents advantages such as a natural spatio-temporal neighborhood accessor by a mesh, and temporal correspondences for most pixels in the video. Furthermore, this fiber-based segmentation is of quasi-linear complexity w.r.t. the number of pixels. The second contribution is in the realm of multiple object tracking. We proposed a tracking approach which utilizes cues from point tracks, kinematics of moving objects and global appearance of detections. Unification of all these cues is performed on a Conditional Random Field. Subsequently this model is optimized by a combination of message passing and an Iterated Conditional Modes (ICM) variant to infer object-trajectories. A third, minor, contribution relates to the development of suitable feature descriptor for appearance matching of persons. All of our proposed approaches achieve competitive and better results (both qualitatively and quantitatively) than state-of-the-art on open source datasets
Golan, Jonathan. "An Explorative Study of Interaction with Tracked Objects in a Virtual Reality Game". Thesis, KTH, Skolan för elektroteknik och datavetenskap (EECS), 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-264571.
Texto completoDe senaste åren har föremål kopplade till Internet (Internet of Things eller Sakernas Internet) och deras augmentering genom virtuell verklighet både blivit möjligt och mer tekniskt avancerat. Denna rapport utforskar hur interaktioner mellan fysiska IoT föremål och deras virtuella och digitala tvillingar kan förbättras. Tre VR-spel med fokus på tre olika interaktioner utvecklades. Ett av spelen fokuserade på rotation, ett annat på rörelsen fram och tillbaka, och det tredje på rörelsen upp och ner. Alla spel involverade användandet av riktiga kartonglådor som representerades i spelet av en virtuell låda i samma position och rotation i relation till spelaren, vilket lät spelaren manipulera de virtuella lådorna genom att manipulera de fysiska lådorna. 14 deltagare ombads spela spelen och intervjuades i efterhand angående spelen, interaktionerna, underhållningsvärdet och deras tankar kring konceptet. Resultaten kom från deltagarnas prestationer i spelen, deras reflektioner och efterföljande analys av inspelad audio och video. Studien presenterar svårigheter, utmaningar och möjligheter hos det beskrivna systemet och delar med sig av insikter från skapandeprocessen av systemet och spelen. Studiens huvudsakliga bidrag är de nämnda insikterna från skapandeprocessen samt ett par specifika intresseområden för framtida forskning: vikten av hänsyn till ergonomi och utvärdering av affordans.
Liaghati, Tania. "Trace metal geochemistry and weathering mineralogy in a quaternary coastal plain, Bells Creek catchment, Pumicestone Passage, Southeast Queensland, Australia". Thesis, Queensland University of Technology, 2004. https://eprints.qut.edu.au/15998/1/Tania_Liaghati_Thesis.pdf.
Texto completoLiaghati, Tania. "Trace metal geochemistry and weathering mineralogy in a quaternary coastal plain, Bells Creek catchment, Pumicestone Passage, Southeast Queensland, Australia". Queensland University of Technology, 2004. http://eprints.qut.edu.au/15998/.
Texto completoHowell, Jamie Robert. "Learning through stories : An investigation into how Tracks Rites of Passage Programme impacts on the development of young men and their family systems". Thesis, University of Canterbury. Educational Studies and Leadership, 2012. http://hdl.handle.net/10092/7611.
Texto completoBraun, Joanne. "Box Turtles, Terrapene carolina, as Potential Seed Dispersers: Effects of Passage Through Digestive Tracts on Seed Germination". W&M ScholarWorks, 1985. https://scholarworks.wm.edu/etd/1539625298.
Texto completoLelarge, Maria Lidia Meideros Vignol. "Thermochronologie par la méthode des traces de fission d'une marge passive (dôme de Ponta Grossa, se Brésil) et au sein d'une chaîne de collision (zone externe de l'arc alpin, France)". Université Joseph Fourier (Grenoble), 1993. https://tel.archives-ouvertes.fr/tel-00603209.
Texto completoPöschke, Patrick. "Influence of Molecular Diffusion on the Transport of Passive Tracers in 2D Laminar Flows". Doctoral thesis, Humboldt-Universität zu Berlin, 2018. http://dx.doi.org/10.18452/19526.
Texto completoIn this thesis, we consider the advection-diffusion-(reaction) problem for passive tracer particles suspended in two-dimensional laminar flow patterns with small thermal noise. The deterministic flow comprises cells in the shape of either squares or cat’s eyes. Rotational motion occurs inside them. Some of the flows consist of sinusoidal regions of straight forward motion. All systems are either periodic or are bounded by walls. One examined family of flows continuously interpolates between arrays of eddies and shear flows. We analyse extensive numerical simulations, which confirm previous theoretical predictions as well as reveal new phenomena. Without noise, particles are trapped forever in single building blocks of the flow. Adding small thermal noise, leads to largely enhanced normal diffusion for long times and several kinds of diffusion for intermediate times. Using continuous time random walk models, we derive analytical expressions in accordance with numerical results, ranging from subdiffusive to superballistic anomalous diffusion for intermediate times depending on parameters, initial conditions and aging time. We clearly see, that some of the previous predictions are only true for particles starting at the separatrix of the flow - the only case considered in depth in the past - and that the system might show a vastly different behavior in other situations, including an oscillatory one, when starting in the center of an eddy after a certain aging time. Furthermore, simulations reveal that particle reactions occur more frequently at positions where the velocity of the flow changes the most, resulting in slow particles being hit by faster ones following them. The extensive numerical simulations performed for this thesis had to be done now that we have the computational means to do so. Machines are powerful tools in order to gain a deeper and more detailed insight into the dynamics of many complicated dynamical and stochastic systems.
Lapointe, Frédérique y Frédérique Lapointe. "Tracer son chemin : la transition à la vie adulte des femmes ayant expérimenté l'itinérance". Master's thesis, Université Laval, 2019. http://hdl.handle.net/20.500.11794/37561.
Texto completoCertains groupes de la population sans domicile fixe sont identifiés comme particulièrement vulnérables. Les femmes et les jeunes adultes en font partie. En plus d’être spécifiquement touchées par certaines formes d’adversité au courant de leur vécu de rue, ces franges minorisées des populations en situation d’itinérance sont rarement représentées dans les politiques sociales et les dénombrements entourant ce phénomène. Le but de cette recherche est de faire entendre les voix de femmes ayant expérimenté l’itinérance sur la façon dont elles vivent ou ont vécu leur transition à la vie adulte. Prenant appui sur la perspective intersectionnelle socioconstructionniste, cette étude a cherché à éclairer leur expérience et leur compréhension de leur situation, tout en mettant en lumière les mécanismes d’oppression et les stratégies de résistance présents dans leur parcours. Misant sur une approche narrative, cette recherche qualitative a été réalisée par le biais d’entretiens individuels auprès de cinq jeunes femmes afin de recueillir le récit personnel de leur passage à la vie adulte. Ainsi, le parcours singulier de chacune de ces femmes de même que les similitudes et les différences entre leurs situations respectives ont été analysées pour mieux comprendre leurs expériences semblables et variables de l’itinérance au cours du passage à la vie adulte. Les résultats décrivent des parcours faits de départs, de nouvelles rencontres et de prises de décisions menant vers diverses situations de revenus et d’hébergement. Au-delà des interprétations qu’elles font de leur vécu respectif, les participantes éclairent les mécanismes d’oppression auxquels elles sont confrontées, incluant diverses formes de mise à l’écart et de violence, ainsi que les stratégies qu’elles emploient pour améliorer leur sort.
Some groups of the homeless population are identified as particularly vulnerable. Women and young adults are part of them. In addition to being specifically affected by certain forms of adversity when they are on the streets, these minority fringes of homelessness are rarely represented in social policies and are not included in the numbers regarding this phenomenon. The purpose of this research is to put forward the experience of transition to adulthood of women who experience, or have experienced, homelessness. Drawing on the intersectional socioconstructionist perspective, this study sought to shed light on their path and understanding of their situation, while highlighting the mechanisms of oppression and the strategies of resistance. Using a narrative approach, this qualitative research was conducted through individual interviews with five young women. Thus, each of these women's unique pathways as well as the similarities and differences between their respective situations were analyzed to better understand their similar and variable experiences of homelessness during the pathway of adult life. The results describe journeys made of departures, new encounters and decision-making leading to various income and housing situations. Beyond the interpretations they make of their experiences, the participants shed light on the oppression mechanisms they face, including various forms of exclusion and violence, as well as the strategies they employ to improve their lives.
Some groups of the homeless population are identified as particularly vulnerable. Women and young adults are part of them. In addition to being specifically affected by certain forms of adversity when they are on the streets, these minority fringes of homelessness are rarely represented in social policies and are not included in the numbers regarding this phenomenon. The purpose of this research is to put forward the experience of transition to adulthood of women who experience, or have experienced, homelessness. Drawing on the intersectional socioconstructionist perspective, this study sought to shed light on their path and understanding of their situation, while highlighting the mechanisms of oppression and the strategies of resistance. Using a narrative approach, this qualitative research was conducted through individual interviews with five young women. Thus, each of these women's unique pathways as well as the similarities and differences between their respective situations were analyzed to better understand their similar and variable experiences of homelessness during the pathway of adult life. The results describe journeys made of departures, new encounters and decision-making leading to various income and housing situations. Beyond the interpretations they make of their experiences, the participants shed light on the oppression mechanisms they face, including various forms of exclusion and violence, as well as the strategies they employ to improve their lives.
Moravec, Josef. "Osobní výtah pro obytné budovy". Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2014. http://www.nusl.cz/ntk/nusl-231640.
Texto completoKummer, Larissa. "REMEDIAÇÃO DE SOLOS CONTAMINADOS POR METAIS PESADOS USANDO BIOSSURFACTANTE PRODUZIDO A PARTIR DE RESÍDUO AGROINDUSTRIAL". Universidade Estadual do Oeste do Parana, 2014. http://tede.unioeste.br:8080/tede/handle/tede/190.
Texto completoHigh concentrations of heavy metals in the soil can affect the sustainability of ecosystems and the health of humans and animals. The metal availability in the environment is related to the characteristics of each element, historical and source of contamination, as well as the properties of each soil. The presence of more than one element is common in contaminated areas and their interaction can affect their behavior in the environment. Researches have been developed to study the behavior of metals in different types of soils and thus help in cases of remediation. In recent years, the soil washing with biosurfactant has been presented as a promising method of remediation with little or no effect on the physico-chemical and microbiological characteristics of the soil, but the costs of obtaining this biosurfactant are still high, because most manufacturers use artificial means for production. Thus, this study had the objective of evaluating the remediation potential of the biosurfactant obtained from the fermentation of cassava water through the action of the bacteria Bacillus subtilis. This biosurfactant was characterized as surfactin, an anionic lipopeptide. Soils of different origins were used, one of them typical of the southwestern state of Paraná and the other from the northwest. The soils were first evaluated according to their potential for adsorption of the elements copper, zinc and lead in monometallic and multimetalic conditions, representing non-competitive and competitive conditions respectively. This evaluation was carried out by tests of adsorption and application of the matematical models of Langmuir and Freündlich. Soils were characterized chemically, physically and mineralogically. After that, it was performed the process of artificial contamination of these soils for application in the experiments of soil washing with biosurfactant in different conditions, having pH and concentration of biosurfactant solution as the main variables. Furthermore, it was also assessed the adsorption s capacity for metals by biosurfactant in liquid medium. The results showed that metals have different behaviors related to the adsorption and desorption to soil and to the biosurfactant. The soil type is also very important for the efficiency of metal removal. The clay soil showed higher adsorption capacity and therefore lower capacity of metal removal when compared to the sandy soil. In general, the soils showed the following sequence of adsorption capacity: Pb > Cu > Zn. The Pb was the element that less desorved by the washing process. It can also be concluded that, when soils are contaminated by more than one element at the same time, its ability to leach is greater than when the element is alone in the medium. This situation occurs because of differences between the competitive processes that take place in the active sites. The washing experiments showed that the biosurfactant was not able to improve the efficiency of removal of metals. The results obtained by the control treatments (only pure water) had very similar values to those that contained biosurfactant. When the wash solution containing the biosurfactant was in high concentrations, decrease in removel efficiency was found in some of the samples. Analysis of high performance liquid chromatography showed that the biosurfactant was adsorbed to soil samples, which is the consequence of not observing the effectiveness of the extractor in the removal of metals. It is notable, however, that the surfactin obtained has the potential to bind to metals, since the tests of adsorption to metals was confirmed by experiments. According to the results obtained, it can be inferred that the surfactin has greater potential for metal removal in liquid media than in solid medium, because of the lower possibility of adsorption. In soil, the results indicated potential use of this biosurfactant as stabilizing of metals in methods of remediation "in situ".
Concentrações elevadas de metais pesados no solo podem afetar a sustentabilidade dos ecossistemas e também a saúde dos seres humanos e animais. A disponibilidade do metal no ambiente está relacionada às características de cada elemento, histórico e fonte de contaminação, bem como às propriedades de cada solo. A presença de mais de um elemento em áreas contaminadas é comum e a interação entre eles pode afetar o seu comportamento no ambiente. Diante do problema, pesquisas vêm sendo realizadas a fim de estudar o comportamento dos metais em diferentes tipos de solos e assim auxiliar nos procesos de remediação. Nos últimos anos, a lavagem do solo com biossurfactante tem sido apresentada como um método promissor de remediação com pequeno ou nenhum efeito sobre as características físico-químicas e microbiológicas do solo, porém os custos de obtenção deste biossurfactante ainda são altos, pois a maioria dos fabricantes utiliza meios artificiais para sua produção. Neste sentido, este trabalho teve como objetivo geral avaliar o potencial de remediação do biossurfactante obtido a partir do bioprocessamento da manipueira pela ação de bactérias Bacillus subtilis. Este biossurfactante foi caracterizado como surfactina, um lipopeptídeo aniônico. Foram utilizados solos de origens distintas, sendo um deles típico da região sudoeste do estado do Paraná e outro da região noroeste. Os solos utilizados foram primeiramente avaliados de acordo com o seu potencial de adsorção dos elementos cobre, zinco e chumbo em condições monometálicas e multimetálicas, representando condições não-competitivas e competitivas, respectivamente. Esta avaliação foi feita por meio de testes de adsorção e aplicação de modelos matemáticos de Langmuir e Freündlich. Os solos foram caracterizados química, física e mineralogicamente. A partir de então realizou-se o processo de contaminação artificial destes solos para posterior aplicação dos experimentos de lavagem com o biossurfactante em diferentes condições, sendo as variáveis pH e concentração da solução de biossurfactante como as principais. Além disso, também foi avaliada a capacidade de adsorção dos metais pelo próprio biossurfactante, em meio líquido. Os resultados mostraram que os metais apresentam comportamentos distintos quanto a adsorção e dessorção ao solo e ao biossurfactante. O tipo de solo também é muito importante para a avaliação da eficiência de remoção de metais. O solo argiloso apresentou maior capacidade de adsorção e consequentemente menor capacidade de remoção dos metais quando comparado ao solo arenoso. De modo geral, os solos apresentaram a seguinte sequência de capacidade de adsorção: Pb > Cu > Zn. O Pb foi o elemento que menos dessorveu pelos processos de lavagem. Foi possível também concluir que quando os solos estão contaminados por mais de um elemento ao mesmo tempo, a capacidade de lixiviar-se é maior do que quando o elemento está sozinho no meio. Esta situação ocorre em virtude dos processos competitivos existentes entre os sítios ativos. Os experimentos de lavagem mostraram que o biossurfactante não foi capaz de melhorar a eficiência de remoção dos metais. Os resultados obtidos pelos tratamentos controle (somente água pura) tiveram valores muito semelhantes aos que continham biossurfactante. Quando a solução de lavagem continha o biossurfactante em altas concentrações, foi encontrada, em algumas amostras, queda na eficiência de remoção. Análises de cromatografia líquida permitiram concluir que o biossurfactante foi adsorvido às amostras de solo, sendo esta a consequência da não observação da eficácia do extrator na remoção dos metais. Cabe ressaltar, entretanto, que a surfactina obtida apresenta potencial de ligar-se aos metais, uma vez que os testes de adsorção desta aos metais foi confirmado pelos experimentos realizados. De acordo com os resultados encontrados, pode-se inferir que a surfactina tem maior potencial de remoção de metais em meio líquido do que em meio sólido, devido a menor possibilidade de adsorção na matriz sólida. Em solo, os resultados indicaram potencial de utilização deste biossurfactante como agente de estabilização dos metais em métodos de remediação in situ .
Trommetter, Guillaume. "Développements analytiques et d’échantillonneurs passifs appliqués aux terres rares et platinoïdes : application aux systèmes aquatiques anthropisés". Thesis, Lille 1, 2020. http://www.theses.fr/2020LIL1R051.
Texto completoAquatic ecosystems are fragile systems, vital for the biosphere and yet subject to numerous, sometimes significant, anthropogenic pressures. Currently, reliable methods allow the quantification and study of the fate of metallic trace elements (Pb, Zn, Cd, etc.) and many organic micropollutants in water and sediments. For other elements such as rare earths or platinum group elements, which are increasingly used by industry, their quantification remains more complex and even uncertain due to their very low concentrations. Their quantification is practically impossible without the use of preconcentration techniques or the development of specific analytical methods to reduce the spectral interferences linked to interferents present in high concentrations in the environment. This research work has allowed (i) to quantify precisely these elements by inductively coupled plasma mass spectrometry combined with the use of a collision/reaction cell by judiciously choosing the gas and its flow applied in the cell ; (ii) to preconcentrate in situ and then determine concentrations ranging from pg L-1 to ng L-1 for platinum group elements, in areas impacted by human activities (road leaching, Pt-based drug releases), by developing passive sampling techniques called "Diffusive Gradients in thin films (DGTs)" based on the use of two different resins, and (iii) to better understand how some of these elements can be used as tracers of urban discharges, particularly in connection with wastewater treatment plants containing domestic and hospital discharges, in addition to the tracers usually used. To this end, the Marque River served as a pilot site for this prospective study during a period of low water levels. These studies made it possible to determine the current concentrations of rare earths and platinum in environments heavily impacted by human activities, making it possible to monitor their evolution and evaluate their potential impact in the future
Hafsaoui, Aymen. "Peformances de Niveau Applicatif en Environnement Filaire et sans Fil". Phd thesis, Télécom ParisTech, 2011. http://pastel.archives-ouvertes.fr/pastel-00669973.
Texto completoRoche, Agnès. "Mise au point et étude d'échantillonneurs diffusifs pour le suivi de l'exposition personnelle aux concentrations atmosphériques de benzène, toluène, éthylbenzène et xylènes BTEX et d'aldéhydes". Université Joseph Fourier (Grenoble), 1999. http://www.theses.fr/1999GRE10018.
Texto completoVystavna, Yuliya. "Déterminants environnementaux et socio-économiques, leur influence sur les métaux traces et les produits pharmaceutiques dans les cours d'eau : étude comparée sur deux rivières de France et d'Ukraine". Phd thesis, Université Sciences et Technologies - Bordeaux I, 2012. http://tel.archives-ouvertes.fr/tel-00716793.
Texto completoBukatz, Tamara. "The practical difficulties of applying current trade mark law, actions for passing off and copyright law to literary fictional characters per se, independent of the original work". Thesis, Bangor University, 2017. https://research.bangor.ac.uk/portal/en/theses/the-practical-difficulties-of-applying-current-trade-mark-law-actions-for-passing-off-and-copyright-law-to-literary-fictional-characters-per-se-independent-of-the-original-work(a440313e-8f53-43ad-8c44-7ee1f5426011).html.
Texto completoHennequin-Marot, Elisabeth. "Utilisation des réactions nucléaires (neutron, α) et (neutron, proton) pour la détection d'isotopes stables en biologie". Rouen, 1986. http://www.theses.fr/1986ROUES023.
Texto completoBhurtun, Pratima. "Dynamique de la qualité des masses d’eau dans le bassin Artois-Picardie : compréhension des mécanismes actuels et prévision des évolutions dans un contexte de changement climatique". Thesis, Lille 1, 2018. http://www.theses.fr/2018LIL1R055.
Texto completoThe River Selle is a non-channelised stream in the Artois-Picardy basin and is considered as a priority waterbody by the Artois-Picardy Water Agency. The aim of this work was to study the spatio-temporal behaviour of several substances at different time scales, ranging from low-frequency (grab sampling, passive samplers) to high-frequency monitoring. More specifically, tracers of pollution reflecting urban, agricultural and industrial contamination (nitrates, phosphates, trace metal elements, pesticides, pharmaceutical residues, dissolved organic matter) were investigated. We confirmed that the River Selle is mainly fed by a nitrate-rich groundwater. Besides, the nitrates and atrazine concentrations in the river water were similar to those found in the groundwater. At the upstream of the river, the land-use is mainly dominated by agriculture whereas most of the urban islets are located at the downstream of the river. Consequently, during dry weather, ultra-trace concentrations of some pesticides and pharmaceutical residues were recorded and phosphate levels often exceeded 0.2 mg L-1. Due to the minor flow input of the wastewater treatment plants into the river, metallic contamination in the River Selle (particularly Gd and Zn) is quite low despite the high concentrations measured in wastewater effluents. Water quality issues during storm events were identified by high-frequency monitoring. Significant but time-limited peaks in phosphorus and organic carbon were observed, while nitrates were diluted. The composition of dissolved organic matter was studied by fluorescence spectroscopy. The spectral signature of different types of water (groundwater, surface water and wastewater effluents) was characterised as well as the origins of this organic matter (autochtonous vs allochthonous). Finally, these results enable to discuss qualitatively the future effects of climate change at a regional scale on the evolution of the water quality of the River Selle
Štrumfa, David. "Návrh modernizace žst. Brandýs nad Orlicí". Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226033.
Texto completoMcComb, Mark Errol. "A passive monitor for trace metals in water". 1995. http://hdl.handle.net/1993/12207.
Texto completoChang, Chun-Chieh y 章鈞傑. "Development of the Tracking Controller of Passive Solar Tracker". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/82382566981409074977.
Texto completo東南科技大學
機電整合研究所
98
This thesis is about to develop a tracking controller of passive solar tracker. The dual axis solar tracking system of the concentrator photovoltaic panel is using the error signal from the quadrant detector to trace and modify. If there is no sunlight, the tracking system will not activate nor continue tracking the sun. When the sun appear after a period of time, as the angle deviated from the solar sensor range, the motor would not be started or continued tracking, at this time there must be an auxiliary controller. Since the orbit of the earth and the sun is fixed, and has theoretical formula, by using the formula of fixed locus of the earth to design a control program and send signals to drive motor for passive tracking and within the permissible of the deviation angle of the solar tracking sensor or the solar cell modules, may set the time interval or angle interval to save energy. The control program uses LabVIEW software. Finally by using the laboratory's existing X-Z dual axis solar tracker, the experimental results confirmed the program control accuracy is within a 5-degree, smaller than using a four-quadrant optical sensor which is 7.85 degrees, so it meets the demand of controlling required. The control program can also be applied to drive the general solar chip modules, and set up a wider tracking angle, and taking into account the function of energy saving.
Jhang, Jhih-Kai y 張智凱. "Tracking Control System of the Two Axes Passive Solar Tracker". Thesis, 2008. http://ndltd.ncl.edu.tw/handle/qk99ea.
Texto completo國立中央大學
能源工程研究所
96
The purpose of this research is to develop a passive sun-tracking control system for high concentrated photovoltaics (HCPV), which uses two axes tracking mechanisms. HCPV uses III-V solar cell which has higher efficiency and can only absorb the direct solar irradiation. In order to reducing the error of incident angle, which causing degradation of insolation absorption of the solar cell, the precision of tracker is set to be smaller than 0.5°. The passive tracking adopted in this study is utilizing the horizontal coordinates of astronomy, which depends on the latitude, longitude and time zone of the tracker’s location to calculate the altitude and azimuth of the solar. The stepping motor, which drive the tracking mechanisms, is chosen to provide adequate rotating torque for mechanism and rpm for coping with rapid motion of the solar trajectories (particularly in the noon). This control system is programming with Labview software. When the solar altitude and solar azimuth move at angle of 0.2°, the controller drives the stepping motor to actuate the tracker. A collimating tube with an accuracy of 0.1° is used to measure the error of tracking angle, and recorded the light spot in the collimating tube with a digital camera to analyzing the error distribution. At the outdoor test, experiment results show that the average angle error is less than 0.5° and which prove the feasibility of the passive sun-tracking system can be used in HCPV.
Larner, BL. "Application of an in situ passive sampling technique for assessment of contaminants in the Antarctic environment". Thesis, 2006. https://eprints.utas.edu.au/20644/1/whole_LarnerBronwynLesley2006_thesis.pdf.
Texto completoYang, Bo-Sung y 楊博松. "Identifications of Tribology Parameters of Pneumatic Cylinder for Passive Solar Tracker". Thesis, 2014. http://ndltd.ncl.edu.tw/handle/61034170151984165483.
Texto completo明志科技大學
機械工程系機械與機電工程碩士班
102
The researches and developments of the renewable energies are getting more and more important for the academic and industry nowadays which are the main streams and may to meet the energy needs for the whole world. Associating with the solar tracker the output power of the solar cells may be enhanced because of the facing the sun the solar cells give more intension on the photovoltaic effects. The active solar tracker which is actuated by an electric motor associating with the feedback sensor to detect the sunlight. This active solar tracker has drawbacks of energy depletion and the emission of huge amount of carbon dioxide. The passive solar tracker is thus more suitable for solar tracking since the tracking need energy free from the electricity. The Freon tanks of each sides of the solar cell absorb the sunlight. The pressures within the tanks are proportional to the sunlight by the photothermal conversion. Two chambers of the pneumatic cylinder may be indifference if the solar cell is not facing the sun. This indifference pressure makes the pneumatic cylinder to actuate the tracker. The stick-slip effect of pneumatic cylinder may affect the tracking accuracy which is caused by the tribology of pneumatic cylinder. Based on the LuGre model this study investigates the stick-slip effect of the pneumatic cylinder of the passive tracker. Identification of the tribology parameters of the LuGre model is the purpose of this thesis. Acquiring of the tribology parameters of the pneumatic cylinder filled with the Freon is useful for application of the solar tracking system. The solar tracker may be modified to deriving excellent system dynamic response based on the previous parapeters.
Nytepchuk, Nini Johanna. "Operating performance of passive infrared counters under different seasons". 2016. http://hdl.handle.net/1993/31225.
Texto completoMay 2016
Tomlinson, Michael S. "Viability Of Using Dgt Passive Samplers To Measure Dissolved Trace Elements In Subtropical Freshwater And Estuarine Environments". Thesis, 2004. http://hdl.handle.net/10125/10539.
Texto completoGomes, Luís Gonçalo Brás. "Determination of partition coefficients between passive samplers and the aquatic environment for trace levels of organic pollutants". Master's thesis, 2018. http://hdl.handle.net/10451/35568.
Texto completoIt is of greatest importance to preserve and safeguard the remaining water resources, and to ensure their sustainable management. Hence, environmental monitoring of water is becoming increasingly important and policy programs on water management have been adopted by authorities around the globe with ambitious goals and approaches that can be used for preserving quality of water. Therefore, there is a growing interest in assessing the concentration and distribution of new nonregulated organic contaminants (emerging contaminants) in the environment. The measurement of freely dissolved concentrations using conventional approaches is challenging due to the low concentrations that may be encountered and their temporally variable concentrations. The subsequent laboratory analysis of the sample provides only a snapshot of the levels of pollutants at the time of sampling and episodic pollution events can be missed. Passive sampling technology has been developing very quickly for the past 20 years and, today, these methods represent a viable alternative to traditional sampling methods as they have shown to be promise as tools for measuring concentrations of a wide range of priority pollutants. Depending on sampler design, the mass of pollutant accumulated by a sampler should reflect either the concentration with which the device is at equilibrium or the time-averaged concentration to which the sampler was exposed enabling the estimation of freely dissolved concentrations of contaminants of emerging concern in water. The use of passive sampling method for estimation of freely dissolved concentrations of emerging contaminants requires the calibration of the passive sampler device. The partition coefficients of a target compound between the passive sampler and water is one of the needs for a successful calibration of the passive sampler device. Measurement of partition coefficients between silicone rubbers and water, Kpw, becomes more difficult as the hydrophobicity of the compound increases. Experimental challenges include long extraction times, sorption to various surfaces and materials, and incomplete dissolution of the compound in the aqueous phase. In order to avoid these artifacts and to shorten experimental time, a series of equilibration experiments of target compounds between the sampler and water in a closed system were performed. For polycyclic aromatic hydrocarbons (PAHs) and personal care products (PCPs), polymer-water partition coefficients were determined in ultra-pure water for AlteSil™ silicone rubbers using equilibration by both compound release and uptake kinetics. The direct contact method is used to equilibrate polymers under enhanced pressure. A spiked silicone rubber sheet is sandwiched between two other unspiked sheets to decrease its concentration and perform new equilibration process for polymer-water partition coefficients estimation. Estimated polymer-water partition coefficient values are in good agreement with the values from different experimental methods and with the literature values. Also, a study of temporal evolution of the concentration of target compounds in the aqueous phase and the wall of the bottles was performed. However, only sampling rates from equilibration experiments were estimated. The Monte Carlo method is used to evaluate the uncertainty of the complex determination of partition coefficients. For Monte Carlo simulation, a mathematical model is built to describe all interactions between input quantities that affect partition coefficients determination. From that model, mathematical samples from each parameter are generated, which represent estimated values of the input variables, and combined to estimate the distribution of the measurement result. Probability density functions are used to represent the statistical distribution of each input parameter. The results from the 105 Monte Carlo trials are used to estimate the output quantity value and its associated uncertainty.
Chuchu-Yang y 楊筑曲. "Pantyhose—The traces of passing through, drifting across, saving the female body". Thesis, 2010. http://ndltd.ncl.edu.tw/handle/12562302924978727357.
Texto completo實踐大學
時尚與媒體設計研究所碩士在職專班
98
The human body is disciplined, paid attention and anticipated by society since it is born. The human body is categorized into either male or female; therefore, it learns to act as what the society expects from it to meet social standards. The critical factor why the female body is subject to oppression is that the “body” is given the denotation of sex/gender. “Gender difference is a biological and physical factor. It distinguishes between males and females and male and female characteristics.” (Connell, 2004:59)The dominance of patriarchy is the key factor that the human body is infused with the meaning of sex/gender. Women living in patriarchy cannot escape from the authority. It is hard to change the fact that the female body does exist. In that case, women need to face the physical reality of their bodies and the relationship between their bodies and the environment. Their bodily functions own certain perception and functions in particular ways (such as ages, body shapes, health conditions, colors of skin and races). Each body seems alike; however, they have different perceptual and bodily experiences. Therefore, in my thesis I will explore the experience of the female body, looking for the pleasure and freedom of being a female. Only when a woman has freedom in mind, does her body obtains its freedom. The theme of my thesis is focused on the silky pantyhose which have strong feminine traits and the flexible texture. I will conduct experiments by making a connection between silky pantyhose and the female body and design clothes according to my female experience. Moreover, I will record the experience of gazing the female body of my own and dig deep into my thought and my role.
McMurrich, Donald. "should one react against the laziness of railway tracks between the passage of two trains". Thesis, 2014. http://hdl.handle.net/10012/8461.
Texto completoLi, Cheng He y 李承和. "Simultaneously Trace Blood Perfusion and Glymphatic Passage by Analyzing Deuterium Oxide Perfusion Imaging with a Two-Compartment Parallel Model". Thesis, 2016. http://ndltd.ncl.edu.tw/handle/94014566597164672537.
Texto completo國立清華大學
生醫工程與環境科學系
104
Deuterium oxide (D2O) perfusion has been used for acquiring hemodynamic images such as tissue blood flow in early studies. As a freely diffusible tracer, D2O may also be an alternative of fluorescent tracer in discovering glymphatic system which has been demonstrated as a lymphatic-like circulation system along paravascular pathway in brain tissue. In this study, a new indirect detection strategy by 1H-MRI was used to acquire D2O perfusion images with better signal-to-noise ratio on rat brain. Then a two-compartment parallel model (2CPM) was applied to analyses of D2O perfusion to extract both blood and glymphatic dynamics simultaneously. A traditional one-compartment Tofts model (1CTM) was also applied to quantify cerebral blood flow (CBF) for comparison. The results showed that both 1CTM and 2CPM could obtain CBF maps with stable and reasonable values. Moreover, the spatial distributions of the parallel flow of 2CPM were adjacent to the locations where the paravascular pathway of cerebral-spinal fluid (CSF) lies. Therefore, according to the blood irrelevant flow values and the spatial matched mapping, we have demonstrated that using 2CPM for tracing D2O might noninvasively reveal the information of CSF-dynamics which is regulated by glymphatic system. Further investigations and applications should be conducted to connect D2O tracer analysis of 2CPM with the comprehensive water passages in rat brain.
Chih-YuanCheng y 鄭智元. "Active Switching Tracker based on Model-Predictive Control with Input Constraint for a Passively Switching MIMO System". Thesis, 2012. http://ndltd.ncl.edu.tw/handle/74229054581768880919.
Texto completo國立成功大學
電機工程學系碩博士班
100
In some cases, a system may switch from one model to another, passively. In this thesis, an active switching mechanism is proposed for a passively switching MIMO system. The modified optimal anti-windup control scheme is combined with model-predictive control (MPC), to resolve the input constraint problem for the passively switching MIMO system with input constraints, without losing the good tracking performance as possible. The proposed model-predictive control scheme can identify the switching instant immediately, and it systematically compresses a huge control input within the desired range by adjusting the well-designed weighting matrix for the linear time-invariant (LTI) constrained system.
Tseng, Yu-Chen y 曾玉媜. "The Study of Active and Passive Management Stock Funds’ Integration with Stock Market in Taiwan – The Examples of Capital Marathon Fund and Polaris Taiwan Top 50 Tracker Fund". Thesis, 2011. http://ndltd.ncl.edu.tw/handle/n65y3w.
Texto completo國立中興大學
高階經理人碩士在職專班
99
Taiwan''s stock market is the leader of the financial markets that is an important indicator of economic development. Is to issue securities investment trust mutual funds, domestic stock is the most important promoter of the bond market plays a pivotal role in fund management firms they are also important investment channel for the people. With the outbreak of financial crisis, global financial markets in the doldrums, and mutual funds the risk presented by the spillover of volatility, and no less than the risk of decline in investment in a single stock, the active management of equity funds, so investors can not help but doubt, its value-added effect of mutual funds, and information asymmetry can not fully reveal the circumstances, fund investment, whether to invest in people as in mind, and truly mutual fund investment benchmark, with the diversity of financial market investment , investment risk aversion is more important. The study in Taiwan active management equity fund, Capital Marathon Fund net rate of return, for example, and the Taiwan stock index stock market returns as integration of research, and Taiwan passive management equity funds, to Polaris Taiwan Top 50 Tracker Fund net worth return, for example, and the Taiwan 50 Index stock returns was the main object of study. The net value returns of Taiwan active management equity funds, the net value returns of Taiwan passive management equity fund, Taiwan stock market index returns and Taiwan 50 stock index returns are the June 15, 2003 to December 31, 2010 as the samples of time-varying conditional correlations and the volatility spillover effect. Using DCC (Dynamic Conditional Correlation) as much as variable GARCH (Generalized Autoregressive Conditional Heteroskedasticity) generalized autoregressive condition heterogeneous variance model to explore the Taiwan active management equity fund net worth, Taiwan passive management stock fund net worth, and Taiwan Top50 Tracker fund Taiwan market index four item return on net worth information and stock return volatility spillover between and time-varying conditional correlations of the phenomenon.